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Germany

North Rhine-Westphalia

Euskirchen

Hellenthal

View of the Olef Reservoir – Olef Reservoir loop from Schwalenbach

Routes

Germany

North Rhine-Westphalia

Euskirchen

Hellenthal

View of the Olef Reservoir – Olef Reservoir loop from Schwalenbach

Hard

4.8

(4)

riders

View of the Olef Reservoir – Olef Reservoir loop from Schwalenbach

02:24

33.3km

460m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: June 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Naturpark Hohes Venn-Eifel

Waypoints

Start point

Bus stop

Get Directions

9.54 km

Westwall Remnants at Hollerath

Highlight • Historical Site

One of the many places that remind of the past war. However, today you can enjoy the peace and quiet of nature. In the evening you can often see deer that scares you while cycling ..

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14.3 km

Oleftal

Nature Reserve

16.6 km

Oleftalsperre Inlet

Highlight • River

From the inlet you can drive towards Hollerrath or Belgium 🚴‍♂️👍🏻.

Translated by Google •

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16.6 km

Scenic Stream in Naturpark Hohes Venn-Eifel

Highlight • River

there is a nice asphalt climb from this point up, recommended!

Translated by Google •

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20.5 km

View of the Olef Reservoir

Highlight • Viewpoint

beautiful view over the reservoir

Translated by Google •

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22.1 km

Oleftalsperre Dam

Highlight • Monument

View over the over 50 meter high dam of the Oleftalsperre.

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22.2 km

Olef Reservoir

Highlight • Lake

The Oleftalsperre was built in 1954-59. Due to cracks, the barrier had to be reinforced twice afterwards. Since 1965, the barrier has been used for drinking water, energy production and …

Translated by Google •

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26.2 km

Prethtal Valley

Highlight (Segment) • Trail

Very nice MTB section in the Prethtal.

Translated by Google •

Tip by

28.2 km

This section is part of my tour "Hellenthal Prethtal Hollerath Oleftal Hellenthal": komoot.de/tour/7741056.

Videos to the subsection of the bike path in the Prethtal of Unterpreth direction Oberpreth can be …

Translated by Google •

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33.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

26.4 km

3.33 km

3.22 km

404 m

Surfaces

16.1 km

12.6 km

4.04 km

552 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (630 m)

Lowest point (400 m)

Weather

Saturday 27 June

29°C

20°C

62 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Comments

October 2, 2022,Grinduro Hangover Ride with Komoot

Really very muddy atter all the torrential rain the past 2 days!

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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View of the Olef Reservoir – Olef Reservoir loop from Schwalenbach

Westwall Remnants at Hollerath

Oleftalsperre Inlet

Scenic Stream in Naturpark Hohes Venn-Eifel

View of the Olef Reservoir

Oleftalsperre Dam

Olef Reservoir

Prethtal Valley

Prethtal Cycle Path

Nearby routes

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